Hub and spigot pipe and joint.



No. 662.907. Patented Dec. 4, I900. n. BDEKLEN.

HUB AND SPIGOT PIPE AND JOINT.

(Application filed July 13, 1897. Renewed. Apr. 6, 1900.)

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REINHOLD BOEKLEN,

OF NEW YORK, N. Y.

HUB AND SPIIGOT PlPEAND JOENT.

SEEQIFIGATION forming part of Letters Patent No. 662,907, dated December 4, 1900.

Application filed July 13,1897. Renewed April 6, 1900. Serial No. 11,894. (No model.)

To all whom it may concern:

Be it known that I, REINHOLD BOEKLEN, a citizen of the United States, and a resident of the city of New York, (Brooklyn,) in the county of Kings and State of New York, have invented a new and useful Improvement in Hub and Spigot Pipes and Joints, of which the following is a specification.

One object of this invention is to provide a hub-joint for gas, water, and other cast pipe from one section to'another without the use of lead for packing to seal against leakage and to avoid the necessity of calking. When lead is used to seal the joint, a furnace and fuel are required for melting the lead, which have to be carried from joint to joint of the pipeline, and blockading the street and the smoke nuisance are illegal.

A secondary object of the invention is to avoid the necessity of digging out at the junction of the pipes a large space in the pipeditch to make room for calking of the lead joint.

Another objectof the invention is to construct the hub and spigot joint with an improved method of placing and firmly holding the spigot in the bell to suitable angles for the necessary curves of the pipe-line, so as to render the joint pliable without its being liable to leakage,and to accommodate a moderate displacement of the pipe-line, which may be curved by the settling of a new pipe-bed, and to lessen the number of joints to save cost in laying pipe-lines to follow short curves of streets.

In the annexed drawings, forming part of this specification, Figure 1 represents a side elevation of a jointed portion of a spigot and bell end of .a pipe laid horizontally and constructed with my improved joint. Fig. 2 is a vertical central longitudinal section of the same. Fig. 3 is a detached side view of the bell end of the same. Fig. 4c is a detached side view of the spigot end of the same. Fig. 5 is a detached side View of the cap to clamp the packing upon the spigot end to the bell end of the same. Fig. 6 is a detached verti- Fig. 7 is Fig. 8 shows a shown. The core of the bell is made tapering, allowing the spigot end B of the joining pipe to enter freely to its bottom and have space on its mouth to place the spigot end to a considerable angle with the bell A to lay the pipeline to follow short curves of the street to prevent the necessity of increasing the number of joints or cutting the lengths of pipe, and thereby increasing the cost of the pipeline. For pipes laid to an ordinary short curve the bell A is made with a limited larger inner diameter to allow the placing of the spigot to the required angle; but with extremely short curves the bore of the bell-is cast toward its bottom with a greater diameter to place the spigot more inclined to suit the short curve.

C represents a circular cast cap, with a hub loosely to slide and fit easy over the outer periphery of the bell A, with its rear portion and its forward portion contracted by an in; ward flange D, having a central opening to pass over the spigot end B and also allow said spigot end to be placed to an angle with the bell end. Now between the inward flange D and'the face end i of the bell I employ a packing-ring E, of elastic material, which may be of asbestos solely or of asbestos dipped or coated with asphalt or of hemp or any other suitable material. l prefer the packing to be of asbestos, which when dipped in water before being inserted is rendered very pliable and will perfectly fill all the packing-space with an even density, and after having been pressed and allowed to dry it remains gas or water proof. It is elastic and yields and conforms without leakage to the limited changes bed settling under the pipeline. Now for the purpose of drawing the cap to the bell and pressing the packing between I construct and cast the bell end back of its bell with several radially-slotted outward lock projections F out from the periphery of the bell end of the pipe and provide the cap 0 on its hub end with radially-slotted openings G, corresponding in number and dimensions with said slotted lock projections F, to employ in each a screw-bolt H, so as to place readily the head of the bolt into slotted opening G of the cap and with it place the threaded shank of the bolt H into the oppositelylocated slotted lock projection F, back of the bell end of the pipe. By means of a screwnut I provided over the threaded end of eachof position of the pipe, as in case of the pipebolt the cap is readily drawn back against the bell, compressing the packing and sealing the joint between the spigot and bell of the pipe. When the spigot is placed much out of line with the bell and the opening in the cap, a good deal to one side of the spigot end, I employ a sheet-metal washer K, which has an opening nearly close-fitting the spigot. and its periphery, fully covering the unc0vered packing atthe mouth of the cap in case of laying the pipe in a curved line.

Instead of constructing the bolts 1-1 with screw-nuts each bolt may be made with a slot in which a taper key is engaged to serve the purpose of a nut, as shown in Fig. 8, and when the bolt is constructed with a nut a key L may be furnished under the nut and solidly held in the slot under the bolt, so that the nut is prevented from turning by said key, as shown in Figs. 6 and '7.

It will be observed that the end face a of the bell A and the opposite inner face of the flange D of the cap 0 are both made about equally concaved and inclining to each other, and to the surface of the spigot in this space between the face of the bell and the opposite inner face of the cap C is employed the packing for the joint. By the power of the bolts being tightened and the pressure from the opposite concave faces of the bell and cap toward the periphery of the engaged part of the spigot the packing is pressed equally against and to grip powerfully the spigot, preventing leakage of the joint by contraction or expansion from ordinary change of temperature, while allowing it to yield to a limited displacement of the pipe-line from the cause of the frequent settlement of the bed of a new pipe-line.

Now in order to lay each pipe-section with the proper space for expansion from change of temperature between the bell and spigot end I cast also two or more projections N'opposite on the periphery of the bell end and corresponding projections M on the spigot end, as shown. The projections M are made with radial slots P, and from the projections N to M, I employ a strong eyescrew O, having a threaded shank Q, with two screw-nuts to engage in the slot P and with an eye R to engage over the projection N. The bolts H have now been loosened and the cap 0 is rebell sufficiently apart one or more sections of leased. The screw-nuts S S are adjusted to hold positively the bell end with the required space from the spigot end, while the cap 0 is drawn properly tight to the bell end in each joint of the pipe-line in laying. After each joint is drawn tight the eyescrew O is removed to the following joint. Now the same eyescrew also serves another purpose. In case of requiring to remove a section of the pipeline by engaging said screw 0 with the projections N and M and first releasing the bolts H and cap 0 and then releasing the outer nuts S of the bolt 0 and forcing with the inner nuts S the bell end from the spigot end to clear the the pipe-line may be readily removed without melting the lead in the joint or cutting the pipe, as is usually the case in all pipes where lead packing is used.

lVhat I claim, and desire to secure by Letters Patent, is-

1. In a hub and spigot pipe joint the combination which consists of the spigot end of one pipe, and the hub end of a joining pipe with a short and enlarged bell to pass with a space allowed between and over said spigot, said bell at its outer rear part with the pipe provided with radial bolt projections and on its end with a concave face provided with a cap with a socket to pass over the said bell and with an inward flange passing loosely over the spigot and having an inner opposite concave face to the bell and an elastic packingbetween said faces and over the spigot the cap being provided with screw-bolts to connect and engage with the bolt projections for drawing the cap to the bell and power fully clamping the packing between said coucave faces to cause the concentrated grip of the spigot substantially as and for the purpose herein set forth.

2. In a hub and spigot pipe joint, the combination of the spigot end of one pipe, and the hub end of a joining pipe, having a short bell over the spigot with an accommodating space between, to place therein the spigot for short curves and said bell having a concave face on its end connected by bolts with a cap having a hub to pass over its outer periphery and an inward flange with an enlarged opening over the spigot covered inside with a closely-fitting washer K and said inward flange with an inner opposite concave face to the face of the bell and an elastic packing between said concave faces and over the spigot substantially as and for the purposes herein set forth.

3. In a hub and spigot pipe joint the combination with the spigot end of one pipe and the hub end of a joining pipe having a bell over the spigot and with it a cap connected with bolts over the spigot and having between the cap and bell an elastic packing, of radial opposite bolt projections M on the periphery of the spigot end beyond the joint and corresponding bolt projections N on the hub end and from each projection M to N a screw 0 with adjusting-nuts P to adjust and hold the spigot end from the bottom of the bell ofthe hub end the required distance to allow for expansion before and during the clamping and tightening of the packing of the joint and for other purposes substantially as herein set forth.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 12th day of July, 1897.

REINHOLD BOEKLEN.

Witnesses:

CHAS. E. LEE, PETER B. VERMILYA. 

